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View Full Version : Please Help Low idle and misfire????



Peterv
20-01-2010, 08:14 AM
Hello!
Please :1zhelp: I have a 1.6 16v Leon which is killing my nerve :zx11: !!!
So when the engine is cold the idle is fine just misfire:aargh4:!!
And when engine is whom then idle is around 500-600rpm and misfire:zx11:???
I already changed spark plugs,ignition leads,coil pack checked,temp.sensor,pressure tested all cylinder no error code with VAG com so I do not know where to continue:confused:??? !!!
Can it be some where vacuum leak??
I like the car just these little things,so please let me know if you got any ideas:beerchug:
Thank you!!!!

towcestervag
20-01-2010, 03:09 PM
if its the all alloy engine carry out a compression test as they suffer from sticking valves due to valve guides

Peterv
22-01-2010, 05:22 PM
Thanks for the replay but I already done compression test and all good!

towcestervag
22-01-2010, 10:12 PM
check for a air leak at the inlet manifold
and also check the hoses that go to the servo

Peterv
22-01-2010, 10:28 PM
Why the servo hoses?

towcestervag
22-01-2010, 10:40 PM
air leak!
the hose goes from the servo to the inlet manifold they have a tendancy to crack at the joints

Peterv
22-01-2010, 11:02 PM
Ok thanks I will check all hoses!